Weaknesses of type CWE-416

5,143 results

Uso após liberação de memória

Ocorre quando o código tenta acessar um bloco de memória que já foi desalocado (free/delete). O ponteiro continua apontando para aquele endereço, mas o dado ali pode ter sido sobrescrito por outra operação, causando comportamento impredizível, corrupção de dados ou execução de código arbitrário.

Example

Um buffer é alocado, depois liberado com free(). Mais adiante, o código ainda tenta ler ou escrever naquele mesmo ponteiro sem verificar. Se um atacante controlar a alocação subsequente daquele endereço, consegue manipular o conteúdo que será lido.

How to mitigate

Anule o ponteiro imediatamente após liberar (ptr = NULL), implemente análise estática para detectar acessos pós-liberação, use ferramentas como valgrind ou AddressSanitizer nos testes, e considere linguagens com gerenciamento automático de memória para código sensível.

CVE-2025-21929HIGHHID: intel-ish-hid: Fix use-after-free issue in hid_ishtp_cl_remove()EPSS 0.2%CVE-2026-11681HIGHUse after free in Ozone in Google Chrome on Linux prior to 149.0.7827.103 allowed a remote attacker to potentially exploit heap corruption vEPSS 0.2%CVE-2025-61842MEDIUMFormat Plugins | Use After Free (CWE-416)EPSS 0.2%CVE-2025-21693HIGHmm: zswap: properly synchronize freeing resources during CPU hotunplugEPSS 0.2%CVE-2023-53432HIGHfirewire: net: fix use after free in fwnet_finish_incoming_packet()EPSS 0.2%CVE-2026-11698HIGHUse after free in Bluetooth in Google Chrome on Mac prior to 149.0.7827.103 allowed a remote attacker to potentially exploit heap corruptionEPSS 0.2%CVE-2025-21915HIGHcdx: Fix possible UAF error in driver_override_show()EPSS 0.2%CVE-2026-11687HIGHUse after free in Dawn in Google Chrome on Mac prior to 149.0.7827.103 allowed a remote attacker to potentially exploit heap corruption via EPSS 0.2%CVE-2026-11699HIGHUse after free in Bluetooth in Google Chrome on Mac prior to 149.0.7827.103 allowed a remote attacker to potentially exploit heap corruptionEPSS 0.2%CVE-2026-69319HIGHWindows USB Video Driver Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-68824HIGHConnected User Experiences and Telemetry Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-42979HIGHWindows Push Notifications Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-69385HIGHWindows TCP/IP Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-54112HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-62748HIGHWindows Telephony Service Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-50384HIGHWindows Clip Service Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-59122HIGHWindows Telephony Service Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-27926HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-50349HIGHWindows Ancillary Function Driver for WinSock Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-58598HIGHWindows Backup Service Elevation of Privilege VulnerabilityEPSS 0.2%